Burglar-proof sash-lock.



JOHN GIANNINOTO, OF BBOQKLYN, NEVT YORK.

BURGLAR-PROOF SASH-LOCK.

Lasasio.

Specification of Letters Patent.

Patented J an. to, 1912.

Application filed (Miami, 1917 Serial No. 172,900.

To all whom it may concern:

Be it known that 1, JOHN Gmnmnoro, a subject of the King ofltaly, and, resident of the city of New York, borough of Brooklyn, in the county of Kings and State of New York have invented a new and 1111- proved Burglar-Proof Sash-Lock, of which the following is a full clear, and exact description.

My invention relates to a sash of the type in which coacting elements are arranged on the meeting rails of sliding sashes.

Objects of the invention are to provide burglar-proof locking means of simple construction that may becheaply produced and readily secured in position; to provide for the operation of the lock with facility; to provide for positioning the parts so as not to interfere with the relative movement of the sashes when it is not desired to lock the latter; and to provide burglar proof sash locking means of a form to operate with the sash locking elements of a known type.

Other objects of the invention and its advantages will appear as the description proceeds.

Reference is to be had to the accompanying drawings forming a part of this specification in which similar reference characters indicate corresponding parts in all the views, it being understood that the drawings are merely illustrative of one example of the invention.

Figure 1 is a transverse vertical section of a sash lock embodying my invention, showing the same applied and in locked position;

Fig. 2 is a front elevation of the sash lock with the parts in the positions shown in Fig. 1;

Fig. 3 is a plan view thereof; and

Fig. 4 is a view similar to Fig. 8 but show ing the parts in the unlocked position.

In carrying out my invention in accordance with the illustrated example, a turnable locking element 10 is applied to the inner sash A, said element being in the general form of a known type in which a Vertical cam flange 11 is produced thereon at the edge. Said element 10 is centrally pivoted, there being shown for the purpose a pivot consisting of a spindle 12 passing centrally through the same and through a block or standard 13 to which it is riveted, said block being provided with a base flange 14 or the like to receive screws 15 or other fastening means for securing the same to the meeting rail of the sash A. The flange 11 terminates in a thumb-piece or finger-piece 16 as is customary with devices of this general type for turning theelement 10. The said cam flange 11 is adapted to engage beneath a downturned hook 1'7, preferably formed on a tubular post 18 having suitable means to secure the same to the meeting rail B of the outer sash, there being shown for the purpose a base flange 19 receiving screws 20. The post 18 is formed at the front thereof with a transverse slot 21 adapted to receive an end of a locking element 22 which is held in position by the pivot 12 beneath the element 10 and between said element and the block 13. The element 22 is adapted to both slide and turn relatively to the pivot 12, there being a slot in said element through which the pivot passes. The pivot 12 is of reduced diameter at its lower portion, thereby presenting a shoulder 24lbelow the head of the said pivot so that the engagement of the-shoulder with the upper surface of the block 13 prevents the head of the pivot from causing the element 10 to clamp or bind the element 22 against the block 13. The element 22 has a suitable knob 25 or equivalent means whereby the said element may be manipulated. At the end of the element 22 opposite the knob an opening 26 is provided which is adapted to receive the reduced and tapered lower end 27 of a locking pin 28 which is adapted to be accommodated in the tubular post 18. Said pin 28 has a head 29 adapted to rest on the top of the post 18 and to prevent loss of the pin it may be attached at one end to a short length of chain 30, the opposite end of said chain being fixedly secured as by an eye 31 on the base flange 19.

} \Vith the described arrangement it will be clear that the element 22 may be dis posed transversely with its inner end extending through the slot 22 into the interior of the tubular post 18 so that the pin 28 may be dropped into the post 18 with the reduced end 27 projecting through the slot or hole 26, thereby preventing the withdrawal of the element 32 and thus holdin the sashes in the locked position. When the pin 28 is withdrawn the element 22 may be slid outwardly to disengage the post 18 and said element 22 may be given a quarter turn to the position shown in Fig 4:, whereby it will lie within the inner edge of the meeting rail of sash A. It will be clear also that the element 10 may be turned to engage or disengage the hook 17 regardless of the locked or unlocked position of the ele ment 22. Thus the coacting elements 10 and 17 may be employed jointly with the post 18 and element 22, thereby providing two sets of locking means. Moreover, the turnable element 10 and its securing pivot 12 are utilized "for retaining the element 22 in position with the elements 10 and 22 in such relation to the hook 17 and the slot of post 18 that either or both the locking means may be brought into action for locking the sashes. By producing the hook 17 on the post 18 and supporting the cam elementlO at a height to engage said hook, the possibility of thevdevice being surreptitiously unlocked by the use of a knife blade entered between the meeting rails of the sashes is minimized.

I wish to state in conclusion that although the illustrated example constitutes a practical embodiment of my invention, I do not limit myself strictly to the mechanical details herein illustrated, since manifestly the same can be considerably varied without departure from the spirit of the invention as defined f n the appended claims.

Having thus described my invention, I claim as new, and desire to secure by Letters Patent 1.' In a sash lock, a hollow post adapted to be secured to one sash, said post having a fixed locking member thereon and formed with a lateral slot intersecting the hollow sliding movementof the second element, and

means to secure the said locking. elements and then pivot to the second sash in position.

to coact with the said post and its fixed locking member.

2. In a sash lock, a. locking element adapted to turn and to slide, a secondjlocking element adapted to be turned, means common to the said elements to secure the same to a. sash, coacting locking means adapted to be engaged by said locking elements, and means'to secure the last mentioned means to the other sash of av pair.

8. In a sash look, a tubular post having a lateral slot intersecting the interior of the post, a pin receivable in the said post, and a coacting slidable and turnable locking element adapted to be projected through the said slotand formed with a hole to receive said pin.

JOHN GIANNINoTo.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. G. 

